Nokia 002B9Q1 N95 User Guide - Page 86
Positioning (GPS), About GPS
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Positioning (GPS) Positioning (GPS) About GPS obstacles, and weather conditions. The GPS receiver should only be used outdoors to allow reception of The Global Positioning System (GPS) is a worldwide GPS signals. radio navigation system that includes 24 satellites and their ground stations that monitor the operation of the satellites. Your device has an internal GPS receiver. Any GPS should not be used for precise location measurement, and you should never rely solely on location data from the GPS receiver and cellular radio networks for positioning or navigation. A GPS terminal receives low-power radio signals from the satellites and measures the travel time of the signals. From the travel time, the GPS receiver can calculate its location to the accuracy of meters. The coordinates in the GPS are expressed in degrees and decimal degrees format using the international WGS-84 coordinate system. The Global Positioning System (GPS) is operated by the government of the United States, which is solely responsible for its accuracy and maintenance. The accuracy of location data can be affected by adjustments to GPS satellites made by the United Your device also supports Assisted GPS (A-GPS). Assisted GPS (A-GPS) is used to retrieve assistance data over a packet data connection, which assists in calculating the coordinates of your current location when your device is receiving signals from satellites. A-GPS is a network service. Your device is preconfigured to use the Nokia A-GPS service, if no service provider specific A-GPS settings are available. The assistance data is retrieved from the Nokia A-GPS service server only when needed. States government and is subject to change with You must have a packet data internet access point the United States Department of Defense civil GPS defined in the device to retrieve assistance data policy and the Federal Radionavigation Plan. from the Nokia A-GPS service. To define an access Accuracy can also be affected by poor satellite point for A-GPS, press , and select Tools > 86 geometry. Availability and quality of GPS signals may be affected by your location, buildings, natural Settings > General > Positioning > Positioning server > Access point. A wireless LAN
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